Cita APA (7a ed.)

Callahan, S. C., & Egan, E. (1989). Psychology and the works of mercy.

Cita Chicago Style (17a ed.)

Callahan, Sidney Cornelia, y Eileen Egan. Psychology and the Works of Mercy. 1989.

Cita MLA (8a ed.)

Callahan, Sidney Cornelia, y Eileen Egan. Psychology and the Works of Mercy. 1989.